WO2003012233A1 - Dual-arm articulated hinge for the front bonnet of a motor vehicle - Google Patents

Dual-arm articulated hinge for the front bonnet of a motor vehicle Download PDF

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Publication number
WO2003012233A1
WO2003012233A1 PCT/DE2002/002727 DE0202727W WO03012233A1 WO 2003012233 A1 WO2003012233 A1 WO 2003012233A1 DE 0202727 W DE0202727 W DE 0202727W WO 03012233 A1 WO03012233 A1 WO 03012233A1
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WO
WIPO (PCT)
Prior art keywords
arm
double
pressure piece
front hood
struts
Prior art date
Application number
PCT/DE2002/002727
Other languages
German (de)
French (fr)
Inventor
Laszlo Kreth
Ingo Renneisen
Andreas Polz
Peter Mrowka
Original Assignee
Adam Opel Ag
Edscha Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adam Opel Ag, Edscha Ag filed Critical Adam Opel Ag
Priority to AU2002321000A priority Critical patent/AU2002321000B8/en
Priority to AT02754431T priority patent/ATE296937T1/en
Priority to EP02754431A priority patent/EP1412601B1/en
Priority to US10/485,121 priority patent/US6934999B2/en
Priority to JP2003517399A priority patent/JP4191030B2/en
Priority to DE50203290T priority patent/DE50203290D1/en
Publication of WO2003012233A1 publication Critical patent/WO2003012233A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/06—Hinges with pins with two or more pins
    • E05D3/14—Hinges with pins with two or more pins with four parallel pins and two arms
    • E05D3/145—Hinges with pins with two or more pins with four parallel pins and two arms specially adapted for vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/12—Parts or details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/536—Hoods

Definitions

  • the invention relates to a double-arm hinge for the front hood of a motor vehicle with a first and a second arm between a rail connected to the front hood and a rail connected to the body.
  • Such hinges are used in a variety of forms. A very basic illustration can be found in DE 197 12 961.
  • the lower ends of the arms are connected to a rail on the body and the upper ends to a rail on the front hood in joints. Since the arms are of different lengths and the pivot points at the top and bottom are at different distances, the front hood is simultaneously moved up and forward when it is opened. In other words, the swivel axis of the front hood runs along a path that is determined by the hinge geometry.
  • HIC value the definition of which can be found in the specialist literature and which should not exceed 1,000 in order to meet certain requirements.
  • Head hits on the front hood in the area of the hinges are particularly critical, since there is a connection between the front hood and the body, which cannot easily be designed so flexibly that the specified HIC value is undershot.
  • the boom In the event of an impending collision with a pedestrian, the boom is raised upwards in a wedge-like manner by means of a prestressed spring.
  • this extends the way in which the impacting head can reduce its kinetic energy.
  • the spring rate determines the resistance that causes the head deceleration quite precisely.
  • the problem is that it is extremely difficult to ensure that the front hood is raised at the right moment.
  • a delay that corresponds to a spring detection is not necessarily optimal with regard to the lowest possible HIC value.
  • the invention is therefore based on the problem of constructing a double-arm hinge in such a way that the injuries remain as small as possible when the head hits the front hood in the area of the hinge. H. that the HIC value measured in a simulation remains below 1,000 if possible.
  • the solution to the problem is a hinge according to the preamble of claim 1 with the further features that at least one arm is made in two parts and - 3rd
  • This arrangement has the advantage that it is activated by a special activation of the protective mechanism, for. B. a biased spring is independent. Rather, the protective mechanism is inherent and does not require an external trigger that is susceptible to faults and is subject to uncertainties.
  • the delay curve achieved in this way results in a HIC value below 1,000.
  • a significant delay only occurs again when the rails meet, but this is no longer significant with regard to their impact on the head injury, since the kinetic energy of the head has already been largely reduced on the first impact.
  • the two-stage delay generated in this way provides good HIC values.
  • the flexibility can be realized in a variety of ways. It could e.g. B. be considered weak points in the material of the arms, so that the arms bend under a load. As particularly suitable - 4th
  • the struts are designed in such a way that they overlap flatly against one another and have the connecting joint in the overlap region and are penetrated by a shear bolt.
  • Such a structure is relatively easy to accomplish and yet fulfills the intended function in a clear manner.
  • a pressure piece is provided on the rail for fastening the front hood. This can be placed on one of the struts of the two-part arm and directs the impact forces acting on the front hood to a certain point of the strut at a distance from the articulated connection with the other strut, so that the shear bolt, which has a different distance from the joint, in a predetermined Ratio to impact force.
  • the arrangement of the pressure piece is such that it moves away from the two-part arm when the front hood is opened.
  • the pressure piece can rest directly on the two-part arm when the front hood is closed, as a result of which the pressure piece on the same side has the task of defining the closed position of the hinge.
  • This task can also be performed by another attack.
  • the pressure piece can be at a certain distance from the strut, so that it hits the strut with a head impact opens, which has the consequence that the shearing process takes place jerkily and takes only a very short time, so that the transition to the phase of reduced delay is more clearly determined.
  • a particularly simple design of the pressure piece is obtained if it is designed as a bolt which protrudes laterally from the rail for fastening the front hood.
  • the pressure piece does not slip off the strut during the transmission of the impact force, it is provided that it has a head which projects into a gap between the two struts and thus engages behind the loaded strut.
  • the strut to which the pressure piece can be placed has an end section which is offset from the other strut to form the gap.
  • FIG. 1 is a side view of the hinge according to the invention in the normal position
  • FIG. 3 shows the hinge according to FIG. 1 after a head impact simulation test has been carried out.
  • Figure 1 shows a side view of a double-arm hinge 1. This consists of an upper rail 2 and a lower rail 3.
  • the upper rail 2 is screwed, welded or made in one piece with a front hood, not shown here.
  • the lower rail 3 is screwed to a body strut, not shown.
  • the two rails 2, 3 are articulated to one another via a long arm 4 and a short arm 5.
  • each arm 4, 5 is rotatably mounted on joints 6, 7, 8, 9 both on the upper and on the lower rail.
  • the upper rail 2 consists of a vertical section 10 for receiving the joints 8, 9 and a horizontal section 11 to which the front hood is attached.
  • the lower rail 3 likewise has a vertical section 12 with two regions 13, 14 offset from one another perpendicularly to the image plane, the one region 13, on which the long arm 4 is rotatably mounted in a joint 6, in the same
  • the plane lies like the vertical section 10 of the upper rail 2, and the other area 14, which receives the joint 7 for the short arm 5, which is offset from it.
  • a bracket 15 is attached to the last-mentioned area 14, with which the lower rail 3 can be fastened to a body strut.
  • the short arm 5 is made in two parts and consists of two struts 16, 17 which are articulated to one another via a connecting joint 18. This connecting joint 18 is located approximately halfway between the two joints 7, 9 on the rails 2, 3.
  • the lower strut 16 is further extended beyond the shear pin 19, and in stages offset from the upper strut 17, which can be seen particularly well in FIG. 2. As a result, a gap 20 is formed between the two struts 16, 17.
  • the pressure piece 22 is fixedly connected to the vertical section 10 of the upper strut 2 and projects vertically.
  • the shear pin 19 rigidly connects the two struts 16, 17 of the short arm 5 so that it functions like a one-piece arm and the double-arm hinge 1 functions as intended. Even with static forces in the normal range, the forces that are exerted on the short arm 5 via the pressure piece 22 are not so high that this rigid connection would break.
  • the pressure piece 22 lies directly against the lower strut 16 of the short arm 5. However, a small distance can also be provided here in order to allow the power transmission to take place with a certain swing.
  • the head 21 engaging behind the lower strut 16 prevents the pressure piece 22 from slipping off the strut 16, as a result of which the transmission of force would be prevented.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Superstructure Of Vehicle (AREA)
  • Hinges (AREA)
  • Seats For Vehicles (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

In order to minimise the seriousness of injuries to pedestrians in a collision between a pedestrian and a vehicle, the front bonnet of the vehicle is mounted with the maximum possible give. The hinged areas are particularly critical, as here there is generally a rigid connection to the bodywork. According to the invention, for a dual-arm articulated hinge (1) comprising two arms (4, 5), one arm (5) is configured in two sections, so that the hinge can give in a collision, the two struts (16, 17) of the arm (5) being interconnected by a shearing pin (19), which breaks or shears off when a specific stress is exceeded. This causes the dual-arm articulated hinge (1) to collapse and give under shock-type stress. A two stage deceleration thus occurs during a head impact, lessening the likelihood of serious injury.

Description

vor Ablauf der für Änderungen der Ansprüche geltenden Zur Erklärung der Zweibuchstaben-Codes und der anderen Frist, Veröffentlichung wird wiederholt, falls Änderungen Abkürzungen wird auf die Erklärungen ("Guidance Notes on eintreffen Codes and Abbreviations") am Anfang jeder regulären Ausgabe der PCT-Gazette verwiesen Before the expiry of the changes to the claims applicable to the explanation of the two-letter codes and the other period, publication will be repeated if changes abbreviations will arrive at the explanations ("Guidance Notes on Codes and Abbreviations") at the beginning of each regular edition of the PCT Gazette directed
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B e s c h r e i b u n gDescription
Doppelarmgelenkscharnier für die Fronthaube einesDouble arm hinge for the front hood of one
Kraftfahrzeugesmotor vehicle
Die Erfindung bezieht sich auf ein Doppelarmgelenkscharnier für die Fronthaube eines Kraftfahrzeuges mit einem ersten und einem zweiten Arm zwischen einer mit der Fronthaube verbundenen Schiene und einer mit der Karosserie verbundenen Schiene .The invention relates to a double-arm hinge for the front hood of a motor vehicle with a first and a second arm between a rail connected to the front hood and a rail connected to the body.
Derartige Scharniere kommen in vielfältigen Formen zum Einsatz . Eine sehr prinzipielle Darstellung kann der DE 197 12 961 entnommen werden. Die unteren Enden der Arme sind mit einer Schiene an der Karosserie und die oberen Enden mit einer Schiene an der Fronthaube jeweils in Gelenken verbunden. Da die Arme unterschiedlich lang sind und die Gelenkpunkte oben und unten unterschiedliche Abstände aufweisen, wird die Fronthaube beim Auf- klappen gleichzeitig nach oben und nach vorn versetzt. Anders ausgedrückt : Die Schwenkachse der Fronthaube durchläuft eine Bahn, die durch die Scharniergeometrie bestimmt ist.Such hinges are used in a variety of forms. A very basic illustration can be found in DE 197 12 961. The lower ends of the arms are connected to a rail on the body and the upper ends to a rail on the front hood in joints. Since the arms are of different lengths and the pivot points at the top and bottom are at different distances, the front hood is simultaneously moved up and forward when it is opened. In other words, the swivel axis of the front hood runs along a path that is determined by the hinge geometry.
Bei der Konstruktion eines Scharniers für eine Fronthaube ist außerdem darauf zu achten, dass die Front- haube in einem bestimmten Maße nachgiebig gestaltet sein muss, damit ein Fußgänger, der vom Fahrzeug er- fasst wird und mit seinem Körper und Kopf auf die Fronthaube schlägt, möglichst wenig verletzt wird. Die daraus resultierenden Vorgaben, die bei der Konstruktion zu berücksichtigen sind, werden in definierten KopfaufSchlagsimulationen überprüft . Bei diesen Versuchen wird die Verzögerung eines Simulationskopfes ge- messen. Aus dem zeitlichen Ablauf der Verzögerung lässt - 2When designing a hinge for a bonnet, it is also important to ensure that the bonnet has to be designed to a certain extent so that a pedestrian who is caught by the vehicle and hits the bonnet with his body and head, is injured as little as possible. The resulting specifications, which have to be taken into account in the design, are checked in defined head impact simulations. In these tests, the delay of a simulation head is measured. From the timing of the delay leaves - 2nd
sich der HIC-Wert ermitteln, dessen Definition der Fachliteratur entnommen werden kann und der nicht über 1.000 liegen sollte, um bestimmte Auflagen zu erfüllen.determine the HIC value, the definition of which can be found in the specialist literature and which should not exceed 1,000 in order to meet certain requirements.
Besonders kritisch sind Kopfaufschläge auf die Fronthaube im Bereich der Scharniere, da hier eine Anbindung der Fronthaube an die Karosserie vorliegt, die nicht ohne weiteres so nachgiebig gestaltet werden kann, dass der vorgegeben HIC-Wert unterschritten wird. In der schon genannten Offenlegungsschrift wir daher unterbreitet, die Schiene an der Karosserie als einen nach oben klappbaren Ausleger auszubilden. Der Ausleger wird mittels einer vorgespannten Feder im Falle einer drohenden Kollision mit einem Fußgänger keilartig nach oben aufgestellt. Dies verlängert zum einen den Weg, auf dem der aufschlagende Kopf seine Bewegungsenergie abbauen kann. Zum anderen wird durch die Federrate ziemlich genau der Widerstand bestimmt, der die Kopf- verzögerung hervorruft. Problematisch ist allerdings, dass es äußerst schwierig ist sicherzustellen, dass die Fronthaube im richtigen Moment angehoben wird. Des weiteren ist eine Verzögerung, die einer Federkennung entspricht, nicht unbedingt optimal im Hinblick auf einen möglichst geringen HIC-Wert.Head hits on the front hood in the area of the hinges are particularly critical, since there is a connection between the front hood and the body, which cannot easily be designed so flexibly that the specified HIC value is undershot. In the aforementioned publication we therefore submit to design the rail on the body as a boom that can be folded upwards. In the event of an impending collision with a pedestrian, the boom is raised upwards in a wedge-like manner by means of a prestressed spring. On the one hand, this extends the way in which the impacting head can reduce its kinetic energy. On the other hand, the spring rate determines the resistance that causes the head deceleration quite precisely. The problem, however, is that it is extremely difficult to ensure that the front hood is raised at the right moment. Furthermore, a delay that corresponds to a spring detection is not necessarily optimal with regard to the lowest possible HIC value.
Die Erfindung beruht somit auf dem Problem, ein Doppelarmgelenkscharnier derart zu konstruieren, dass bei einem Kopfaufschlag auf eine Fronthaube im Bereich des Scharnieres die Verletzungen möglichst gering bleiben, d. h. dass der in einer Simulation gemessene HIC-Wert möglichst unter 1.000 bleibt.The invention is therefore based on the problem of constructing a double-arm hinge in such a way that the injuries remain as small as possible when the head hits the front hood in the area of the hinge. H. that the HIC value measured in a simulation remains below 1,000 if possible.
Die Lösung des Problems ist ein Scharnier gemäß dem Oberbegriff des Anspruchs 1 mit den weiteren Merkmalen, dass zumindest ein Arm zweiteilig ausgeführt ist und - 3The solution to the problem is a hinge according to the preamble of claim 1 with the further features that at least one arm is made in two parts and - 3rd
aus zwei Streben besteht, die mittels eines Verbindungsgelenkes gelenkig miteinander verbunden und mittels einer bei einer bestimmten Belastung nachgiebigen Verbindung starr aneinander befestigt sind, so dass beim Nachgeben der Verbindung in Folge einer stoßartigen Belastung die Schienen sich im Wesentlichen widerstandslos nähern.consists of two struts which are connected to one another in an articulated manner by means of a connecting joint and are rigidly fastened to one another by means of a connection which is flexible under a certain load, so that when the connection yields as a result of an impact-like load, the rails approach essentially without resistance.
Diese Anordnung hat den Vorteil, dass sie von einer be- sonderen Aktivierung des Schutzmechanismus, z. B. einer vorgespannten Feder, unabhängig ist. Der Schutzmechanismus ist vielmehr inhärent vorhanden und bedarf keiner störanfälligen und mit Unsicherheiten belasteten externen Auslösung.This arrangement has the advantage that it is activated by a special activation of the protective mechanism, for. B. a biased spring is independent. Rather, the protective mechanism is inherent and does not require an external trigger that is susceptible to faults and is subject to uncertainties.
Der auf diese Weise erzielte Verzögerungsverlauf bewirkt einen HIC-Wert unter 1.000. Zwar ergibt sich zunächst eine relativ große Verzögerung, bevor die Verbindung der Streben nachgibt, diese ist aber auf einen kurzen Zeitraum begrenzt und damit für den aufschlagenden Kopf erträglich. Danach gibt es eine Phase verminderter Verzögerung, wen sich nach dem Nachgeben der Verbindung die Schienen widerstandslos nähern. Erst wenn die Schienen aufeinandertreffen, tritt wieder eine deutliche Verzögerung auf, die aber hinsichtlich ihrer Auswirkung auf die Kopfverletzung nicht mehr bedeutend ist, da die Bewegungsenergie des Kopfes beim ersten Aufschlag schon weitgehend abgebaut worden ist . Die auf diese Weise erzeugte zweistufige Verzögerung liefert gute HIC-Werte.The delay curve achieved in this way results in a HIC value below 1,000. There is initially a relatively large delay before the connection of the struts yields, but this is limited to a short period of time and is therefore bearable for the impacting head. Then there is a phase of reduced deceleration when the rails approach without resistance after the connection has given way. A significant delay only occurs again when the rails meet, but this is no longer significant with regard to their impact on the head injury, since the kinetic energy of the head has already been largely reduced on the first impact. The two-stage delay generated in this way provides good HIC values.
Die Nachgiebigkeit kann auf unterschiedlichste Arten realisiert werden. Es könnte z. B. an Schwachstellen im Material der Arme gedacht werden, so dass sich die Arme bei einer Belastung durchbiegen. Als besonders geeignet - 4The flexibility can be realized in a variety of ways. It could e.g. B. be considered weak points in the material of the arms, so that the arms bend under a load. As particularly suitable - 4th
haben sich aber Systeme erwiesen, bei denen die Nachgiebigkeit durch den Bruch der Verbindung hervorgerufen wird. Dadurch ergibt sich eine eindeutig definierte Grenzbelastung.however, systems have been found in which the flexibility is caused by the break in the connection. This results in a clearly defined limit load.
Zur Realisierung einer solchen Bruchstelle werden die Streben so ausgebildet, dass sie überlappend flächig aneinander liegen und im Überlappungsbereich das Verbindungsgelenk aufweisen und von einem Scherbolzen durchdrungen sind. Ein solcher Aufbau ist relativ einfach zu bewerkstelligen und erfüllt doch die vorgesehene Funktion in eindeutiger Weise.To realize such a breaking point, the struts are designed in such a way that they overlap flatly against one another and have the connecting joint in the overlap region and are penetrated by a shear bolt. Such a structure is relatively easy to accomplish and yet fulfills the intended function in a clear manner.
Damit die Stoßkräfte definiert auf die Streben übertra- gen werden, ist ein Druckstück an der Schiene zur Befestigung der Fronthaube vorgesehen. Diese ist an einer der Streben des zweiteiligen Armes anlegbar und leitet die auf die Fronthaube wirkenden Stoßkräfte auf einen bestimmten Punkt der Strebe im Abstand zur gelenkigen Verbindung mit der anderen Strebe, so dass der Scherbolzen, der einen anderen Abstand zum Gelenk hat, in einem vorbestimmten Verhältnis zur AufSchlagkraft belastet ist. Die Anordnung des Druckstückes erfolgt dabei so, dass es sich beim Aufklappen der Fronthaube vom zweiteiligen Arm entfernt.To ensure that the impact forces are transferred to the struts in a defined manner, a pressure piece is provided on the rail for fastening the front hood. This can be placed on one of the struts of the two-part arm and directs the impact forces acting on the front hood to a certain point of the strut at a distance from the articulated connection with the other strut, so that the shear bolt, which has a different distance from the joint, in a predetermined Ratio to impact force. The arrangement of the pressure piece is such that it moves away from the two-part arm when the front hood is opened.
Prinzipiell kann das Druckstück bei geschlossener Fronthaube unmittelbar an dem zweiteiligen Arm anliegen, wodurch das Druckstück gleichseitig die Aufgabe hat, die Schließstellung des Scharniers zu definieren.In principle, the pressure piece can rest directly on the two-part arm when the front hood is closed, as a result of which the pressure piece on the same side has the task of defining the closed position of the hinge.
Diese Aufgabe kann auch von einem anderen Anschlag wahrgenommen werden. In diesem Fall kann das Druckstück einen gewissen Abstand zur Strebe einnehmen, so dass es bei einem Kopfaufschlag mit einer Wucht auf die Strebe aufschlägt, was zur Folge hat, dass der Schervorgang ruckartig vonstatten geht und nur sehr kurze Zeit in Anspruch nimmt, so dass der Übergang zur Phase verminderter Verzögerung noch deutlicher bestimmt ist.This task can also be performed by another attack. In this case, the pressure piece can be at a certain distance from the strut, so that it hits the strut with a head impact opens, which has the consequence that the shearing process takes place jerkily and takes only a very short time, so that the transition to the phase of reduced delay is more clearly determined.
Eine besonders einfache Ausführung des Druckstückes erhält man, wenn dieses als Bolzen ausgebildet ist, der aus der Schiene zur Befestigung der Fronthaube seitlich hervorragt .A particularly simple design of the pressure piece is obtained if it is designed as a bolt which protrudes laterally from the rail for fastening the front hood.
Damit das Druckstück bei der Übertragung der Stoßkraft nicht von der Strebe abrutscht, ist vorgesehen, dass es einen Kopf aufweist, der in einen Spalt zwischen den beiden Streben hineinragt und so die belastete Strebe hintergreift.So that the pressure piece does not slip off the strut during the transmission of the impact force, it is provided that it has a head which projects into a gap between the two struts and thus engages behind the loaded strut.
Um den Spalt zu realisieren hat die Strebe, an die das Druckstück anlegbar ist, zur Bildung des Spaltes einen gegenüber der anderen Strebe abgesetzten Endabschnitt.In order to realize the gap, the strut to which the pressure piece can be placed has an end section which is offset from the other strut to form the gap.
Zur Verdeutlichung der Erfindung wird im Folgenden anhand eines Ausführungsbeispiels, dargestellt in drei Figuren, die Erfindung näher erläutert. Es zeigenTo clarify the invention, the invention is explained in more detail below using an exemplary embodiment, illustrated in three figures. Show it
Fig. 1 eine Seitenansicht des erfindungsgemäßen Scharniers in der Normalposition,1 is a side view of the hinge according to the invention in the normal position,
Fig. 2 einen Schnitt entlang der Linie II - II der Figur 1,2 shows a section along the line II-II of FIG. 1,
Fig. 3 das Scharnier gemäß der Figur 1 nach Ausführung eines Kopfauf- schlagsimulationstests . Zunächst wird auf die Figuren 1 und 2 Bezug genommen. Figur 1 zeigt in einer Seitenansicht ein Doppelarmgelenkscharnier 1. Dieses besteht aus einer oberen Schiene 2 und einer unteren Schiene 3. Die obere Schiene 2 wird mit einer hier nicht dargestellten Fronthaube verschraubt, verschweißt oder einstückig ausgeführt . Die untere Schiene 3 wird mit einer nicht näher dargestellten Karosseriestrebe verschraubt . Die beiden Schienen 2, 3 sind über einen langen Arm 4 und einen kurzen Arm 5 gelenkig miteinander verbunden. Dazu ist jeder Arm 4, 5 sowohl an der oberen als auch an der unteren Schiene in Gelenken 6, 7, 8, 9 drehbar gelagert . Die obere Schiene 2 besteht aus einem senkrechten Abschnitt 10 zur Aufnahme der Gelenke 8, 9 und einem waagrechten Abschnitt 11, an dem die Fronthaube befestigt wird. Die untere Schiene 3 weist ebenfalls einen senkrechten Abschnitt 12 auf mit zwei senkrecht zur Bildebene gegeneinander versetzten Bereiche 13, 14, wobei der eine Bereich 13, an dem der lange Arm 4 in ei- nem Gelenk 6 drehbar gelagert ist, in der gleichen3 shows the hinge according to FIG. 1 after a head impact simulation test has been carried out. First, reference is made to FIGS. 1 and 2. Figure 1 shows a side view of a double-arm hinge 1. This consists of an upper rail 2 and a lower rail 3. The upper rail 2 is screwed, welded or made in one piece with a front hood, not shown here. The lower rail 3 is screwed to a body strut, not shown. The two rails 2, 3 are articulated to one another via a long arm 4 and a short arm 5. For this purpose, each arm 4, 5 is rotatably mounted on joints 6, 7, 8, 9 both on the upper and on the lower rail. The upper rail 2 consists of a vertical section 10 for receiving the joints 8, 9 and a horizontal section 11 to which the front hood is attached. The lower rail 3 likewise has a vertical section 12 with two regions 13, 14 offset from one another perpendicularly to the image plane, the one region 13, on which the long arm 4 is rotatably mounted in a joint 6, in the same
Ebene liegt wie der senkrechte Abschnitt 10 der oberen Schiene 2, und der andere Bereich 14, der das Gelenk 7 für den kurzen Arm 5 aufnimmt, dem gegenüber versetzt ist. An dem zuletzt genannten Bereich 14 ist ein Bügel 15 angesetzt, mit dem die untere Schiene 3 an einer Karosseriestrebe befestigt werden kann.The plane lies like the vertical section 10 of the upper rail 2, and the other area 14, which receives the joint 7 for the short arm 5, which is offset from it. A bracket 15 is attached to the last-mentioned area 14, with which the lower rail 3 can be fastened to a body strut.
Gemäß der Darstellung befindet sich der lange Arm 4 hinter den senkrechten Abschnitten 10, während der kurze Arm 5 davor liegt. Der kurze Arm 5 ist zweiteilig ausgeführt und besteht aus zwei Streben 16, 17, die über ein Verbindungsgelenk 18 gelenkig miteinander verbunden sind. Dieses Verbindungsgelenk 18 befindet sich etwa auf halbem Abstand zwischen den beiden Gelenken 7, 9 an den Schienen 2, 3. Die untere Strebe 16, die ge- - 7 -As shown, the long arm 4 is behind the vertical sections 10, while the short arm 5 is in front. The short arm 5 is made in two parts and consists of two struts 16, 17 which are articulated to one another via a connecting joint 18. This connecting joint 18 is located approximately halfway between the two joints 7, 9 on the rails 2, 3. The lower strut 16, the - 7 -
lenkig mit der unteren Schiene 3 verbunden ist, ist über das Verbindungsgelenk 18 hinaus verlängert und liegt in diesem Bereich flächig an der oberen Strebe 17 an, wobei in diesem Bereich die beiden Streben 16, 17 von einem Scherbolzen 19 durchdrungen sind.is connected in an articulated manner to the lower rail 3, is extended beyond the connecting joint 18 and lies flat in this area on the upper strut 17, in which area the two struts 16, 17 are penetrated by a shear pin 19.
Die untere Strebe 16 ist über den Scherbolzen 19 hinaus weiter verlängert, und zwar stufig von der oberen Strebe 17 abgesetzt, was besonders gut in der Figur 2 zu erkennen ist. Dadurch bildet sich zwischen den beiden Streben 16, 17 ein Spalt 20.The lower strut 16 is further extended beyond the shear pin 19, and in stages offset from the upper strut 17, which can be seen particularly well in FIG. 2. As a result, a gap 20 is formed between the two struts 16, 17.
In diesen Spalt 20 greift ein Kopf 21 eines als Bolzen ausgebildeten Druckstückes 22 ein, der ein Druckstück zur Übertragung von Kräften auf den kurzen Arm 5 dient . Das Druckstück 22 ist fest mit dem senkrechten Abschnitt 10 der oberen Strebe 2 verbunden und ragt senkrecht vor.A head 21 of a pressure piece 22 designed as a bolt engages in this gap 20 and serves a pressure piece for transmitting forces to the short arm 5. The pressure piece 22 is fixedly connected to the vertical section 10 of the upper strut 2 and projects vertically.
Der Scherbolzen 19 verbindet die beiden Streben 16, 17 des kurzen Armes 5 starr miteinander, so dass dieser wie ein einteiliger Arm funktioniert und das Doppelarmgelenkscharnier 1 bestimmungsgemäß arbeitet. Auch bei statischen Kräften im Normalbereich sind die Kräfte, die über das Druckstück 22 auf den kurzen Arm 5 ausgeübt werden, nicht so hoch, dass diese starre Verbindung brechen würde .The shear pin 19 rigidly connects the two struts 16, 17 of the short arm 5 so that it functions like a one-piece arm and the double-arm hinge 1 functions as intended. Even with static forces in the normal range, the forces that are exerted on the short arm 5 via the pressure piece 22 are not so high that this rigid connection would break.
Im Falle eines Kopfaufpralls übersteigen die ausgeübten Kräfte aber die Schergrenze, bei dem der Scherbolzen 19 abschert, so dass die Verbindung freigegeben wird. Wenn nämlich eine Stoßkraft gemäß dem Pfeil 23 auf die obere Schiene 2 ausgeübt wird, wird diese über das Druckstück 22 auf den kurzen Arm 5 und von dort entsprechend der 8 -In the event of a head impact, the forces exerted exceed the shear limit at which the shear pin 19 shears off, so that the connection is released. If an impact force is exerted on the upper rail 2 according to the arrow 23, this is applied to the short arm 5 via the pressure piece 22 and from there accordingly 8th -
wirksamen Hebelarme gemäß dem Pfeil 24 auf den Scherbolzen 19 übertragen.transfer effective lever arms according to arrow 24 to the shear pin 19.
In dem gezeigten Ausführungsbeispiel liegt das Druck- stück 22 unmittelbar an der unteren Strebe 16 des kurzen Armes 5 an. Hier kann aber auch ein kleiner Abstand vorgesehen werden, um die Kraftübertragung mit einem gewissen Schwung erfolgen zu lassen. Der die untere Strebe 16 hintergreifende Kopf 21 verhindert, dass das Druckstück 22 dabei von der Strebe 16 abrutscht, wodurch die Kraftübertragung vereitelt wäre.In the exemplary embodiment shown, the pressure piece 22 lies directly against the lower strut 16 of the short arm 5. However, a small distance can also be provided here in order to allow the power transmission to take place with a certain swing. The head 21 engaging behind the lower strut 16 prevents the pressure piece 22 from slipping off the strut 16, as a result of which the transmission of force would be prevented.
Wird innerhalb einer stoßartigen Belastung eine Grenzbelastung erreicht, bei der der Scherbolzen 19 ab- schert, so wird die starre Verbindung zwischen den beiden Streben 16, 17 aufgehoben und diese können sich um das Verbindungsgelenk 18 gegeneinander verdrehen. Dies ermöglicht es, dass die obere Schiene 2 nach unten absacken kann, wie dies in Figur 3 dargestellt ist. Dabei stellt das Scharnier der Bewegung keinen Widerstand entgegen, so dass die KopfVerzögerung lediglich aus einer Verformung der Haube bzw. aus einer Verformung von Stützelementen außerhalb des Scharniers herrührt . Diese werden aber so gestaltet, dass die Verzögerung nur ge- ring ist . Erst wenn das Scharnier vollständig kollabiert ist, wie dies in Figur 3 dargestellt ist, und die obere Strebe 17 auf der unteren Strebe 16 aufliegt, ist wieder eine starre Verbindung zur Karosserie hergestellt, so dass erneut hohe Verzögerungen auftreten. Es stellt sich somit insgesamt ein zweistufiger Verzögerungsverlauf ein, nämlich eine erste Stufe bis zum Abscheren des Scherbolzens 19 und eine zweite Stufe nach dem Kollabieren des Scharniers, bei der insgesamt ein geringer HIC-Wert zu erwarten ist. 9 -If a limit load is reached within an impact-like load at which the shear pin 19 shears off, the rigid connection between the two struts 16, 17 is released and these can twist against one another about the connecting joint 18. This enables the upper rail 2 to sag downward, as shown in FIG. 3. The hinge does not oppose the movement, so that the head deceleration only results from a deformation of the hood or from a deformation of the support elements outside the hinge. However, these are designed so that the delay is only slight. Only when the hinge has completely collapsed, as shown in FIG. 3, and the upper strut 17 rests on the lower strut 16, is a rigid connection to the body again established, so that high delays occur again. There is thus a two-stage delay curve overall, namely a first stage until the shear pin 19 shears off and a second stage after the hinge collapses, in which a low HIC value is to be expected overall. 9 -
B e z u g s z e i c h e n l i s t eB e z u g s z e i c h e n l i s t e
Doppelarmgelenkscharnier obere Schiene untere Schiene langer Arm kurzer ArmDouble arm hinge upper rail lower rail long arm short arm
Gelenk Gelenk Gelenk Gelenk senkrechter AbschnittJoint joint joint vertical section
waagerechter Abschnitt senkrechter Abschnitt Bereich Bereich Bügelhorizontal section vertical section area area bracket
untere Strebe obere Strebe Verbindungsgelenk Scherbolzen Spaltlower strut upper strut connecting joint shear bolt gap
Kopf Druckstück Pfeil Pfeil Head thrust piece arrow arrow

Claims

10P a t e n t a n s p r ü c h e 10P claims
1. Doppelarmgelenkscharnier für die Fronthaube eines Kraftfahrzeuges mit einem ersten und einem zweiten Arm (4, 5) zwischen einer mit der Fronthaube verbundenen Schiene (2) und einer mit der Karosserie verbundenen Schiene (3), dadurch gekennzeichnet, dass zumindest ein Arm (5) zweiteilig ausgeführt ist und aus zwei Streben (16, 17) besteht, die mittels eines Verbindungsgelenkes (18) gelenkig miteinander verbunden und mittels einer bei einer bestimmen Belastung nachgiebigen Verbindung starr aneinander befestigt sind, so dass beim Nachgeben der Verbindung in Folge einer stoßartigen Belas- tung die Schienen (2, 3) sich im Wesentlichen widerstandslos nähern.1. Double-arm hinge for the front hood of a motor vehicle with a first and a second arm (4, 5) between a rail connected to the front hood (2) and a rail connected to the body (3), characterized in that at least one arm (5 ) is made in two parts and consists of two struts (16, 17) which are connected to one another in an articulated manner by means of a connecting joint (18) and are rigidly fastened to one another by means of a connection which is flexible under a certain load, so that when the connection yields as a result of an impact-like load - direction the rails (2, 3) approach essentially without resistance.
2. Doppelarmgelenkscharnier nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Nachgiebigkeit durch den Bruch der Verbindung hervorgerufen wird.2. Double-arm hinge according to claim 1 or 2, characterized in that the flexibility is caused by the breakage of the connection.
3. Doppelarmgelenkscharnier nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die beiden Streben (16, 17) überlappend flächig anein- ander liegen und im Überlappungsbereich das Verbindungsgelenk (18) aufweisen und von einem Scherbolzen (19) durchdrungen sind.3. Double-arm hinge according to one of the preceding claims, characterized in that the two struts (16, 17) overlap flatly against one another and have the connecting joint (18) in the overlap region and are penetrated by a shear pin (19).
4. Doppelarmgelenkscharnier nach Anspruch 3 , dadurch gekennzeichnet, dass an einer der Streben (17) ein4. Double arm hinge according to claim 3, characterized in that on one of the struts (17)
Druckstück (22) anlegbar ist, das sich beim Aufklappen der Fronthaube vom zweiteiligen Arm (5) entfernt. 11Pressure piece (22) can be applied, which moves away from the two-part arm (5) when the front hood is opened. 11
5. Doppelarmgelenkscharnier nach Anspruch 4, dadurch gekennzeichnet, dass in der Schließposition der Fronthaube und des Doppelarmgelenkscharniers (1) zwischen der Strebe (17) , an die das Druckstück (22) anlegbar ist, und dem Druckstück (22) ein Abstand besteht .5. Double-arm hinge according to claim 4, characterized in that in the closed position of the front hood and the double-arm hinge (1) between the strut (17) to which the pressure piece (22) can be placed, and the pressure piece (22) there is a distance.
6. Doppelarmgelenkscharnier nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das Druckstück (22) ein Bolzen ist, der aus der Schiene (2) zur Befestigung der Fronthaube seitlich hervorragt.6. Double-arm hinge according to claim 4 or 5, characterized in that the pressure piece (22) is a bolt which protrudes laterally from the rail (2) for fastening the front hood.
7. Doppelarmgelenkscharnier nach Anspruch 6, dadurch gekennzeichnet, dass das Druckstück (22) einen Kopf (21) aufweist, der in einen Spalt (20) zwischen den beiden Streben (16, 17) des zweiteiligen Armes (5) hineinragt.7. Double arm hinge according to claim 6, characterized in that the pressure piece (22) has a head (21) which projects into a gap (20) between the two struts (16, 17) of the two-part arm (5).
8. Doppelarmgelenkscharnier nach Anspruch 7, dadurch gekennzeichnet, dass zur Bildung des Spaltes (20) die Strebe (17) , an die das Druckstück (22) anlegbar ist, einen gegenüber der anderen Strebe (16) abgesetzten Endabschnitt aufweist. 8. Double-arm hinge according to claim 7, characterized in that to form the gap (20), the strut (17), to which the pressure piece (22) can be applied, has an opposite end section relative to the other strut (16).
PCT/DE2002/002727 2001-07-28 2002-07-25 Dual-arm articulated hinge for the front bonnet of a motor vehicle WO2003012233A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2002321000A AU2002321000B8 (en) 2001-07-28 2002-07-25 Dual-arm articulated hinge for the front bonnet of a motor vehicle
AT02754431T ATE296937T1 (en) 2001-07-28 2002-07-25 DOUBLE ARM HINGE FOR THE FRONT HOOD OF A MOTOR VEHICLE
EP02754431A EP1412601B1 (en) 2001-07-28 2002-07-25 Dual-arm articulated hinge for the front bonnet of a motor vehicle
US10/485,121 US6934999B2 (en) 2001-07-28 2002-07-25 Dual-arm articulated hinge for the front bonnet of a motor vehicle
JP2003517399A JP4191030B2 (en) 2001-07-28 2002-07-25 Hinge with two arms for the front bonnet of a motor vehicle
DE50203290T DE50203290D1 (en) 2001-07-28 2002-07-25 DOUBLE ARMCHAIR HINGE FOR THE FRONT SEAT OF A MOTOR VEHICLE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136897.6 2001-07-28
DE10136897A DE10136897A1 (en) 2001-07-28 2001-07-28 Double arm bonnet (hood) hinge has at least one arm consisting of two struts pivoted to each other

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Publication Number Publication Date
WO2003012233A1 true WO2003012233A1 (en) 2003-02-13

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PCT/DE2002/002727 WO2003012233A1 (en) 2001-07-28 2002-07-25 Dual-arm articulated hinge for the front bonnet of a motor vehicle

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US (1) US6934999B2 (en)
EP (1) EP1412601B1 (en)
JP (1) JP4191030B2 (en)
CN (1) CN1254597C (en)
AT (1) ATE296937T1 (en)
AU (1) AU2002321000B8 (en)
DE (2) DE10136897A1 (en)
ES (1) ES2243753T3 (en)
PT (1) PT1412601E (en)
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US6934999B2 (en) 2005-08-30
ATE296937T1 (en) 2005-06-15
AU2002321000B2 (en) 2006-11-30
AU2002321000B8 (en) 2006-12-21
JP4191030B2 (en) 2008-12-03
US20040232729A1 (en) 2004-11-25
ES2243753T3 (en) 2005-12-01
CN1254597C (en) 2006-05-03
JP2004536985A (en) 2004-12-09
EP1412601A1 (en) 2004-04-28
DE50203290D1 (en) 2005-07-07
CN1558982A (en) 2004-12-29
EP1412601B1 (en) 2005-06-01
DE10136897A1 (en) 2003-02-06
PT1412601E (en) 2005-09-30

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